[Bug libstdc++/110354] [C++26] P2587R3 to_string or not to_string

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110354
Bug 110354 depends on bug 110355, which changed state.

Bug 110355 Summary: std::format("{}", 1e-7) returns "1e-07" instead of "1e-7"
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110355

           What    |Removed                     |Added
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             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |INVALID